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C. E. ROBSON ROLLER BEARING.

APPLICATION FILED NOV. 25. 1921.

Reissued Apr. 25, 1922. l E 15,345.

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UNITED STATES CLARENCE E. ROBSON, OFVPHIIIADEII'PHA, PENNSYLVANIA.

- BOILER BEARING.

Specification of Reissued Letters Patent. Reigsued A r. 25, 1922.

Original R0. 1,889,885, dated August 30, 1921, Serial No. 279,059, filed February 25, 1919. Application for reissue filed November 25, 1921. Serial No. 517,836.

To all whom it may concern: I

Be it known that I, CLARENCE E. Benson, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Roller Bearings, of

which the following is a specification.

-, My invention relates to certain improvements in roller bearings, particularly those of a conical type adapted to conical racewa s.

ne object of myinvention is to provide means for retaining the assembled rollers in position, so that the raceway can be removed without disarranging the rollers.

A further object is to provide means for retaining the several rollers on one of the raceways while the bearing is being assembled, or when one raceway is being removed.

A still further object of the invention is to locate the retaining means so as not to interfere with the freedom of the movement of the rollers while in action.

In the accompanying drawings v Figure 1, is a sectional view through a roller bearing on the line 1-- l, Fig. 2, illustrating my invention;

Fig. 2 isa sectional view on the line 2-2, Fi 1;

ig. 3, is a detached sectional retaining ring; .7

Fig. 4, is a detached perspective view of one of the rollers;

Fig. 5, is a view illustrating the arrangement of theretaining ring so that'it will hold the rollers to the outer raceway; I i

Fig. 6, is a detached sectional view of the ring illustrated in Fig. 5;

Fig; 7, is a sectional view of a modification on the line 77, Fig. 8;

Fig. 8, is a sectional view on the line 8-8, Fi N 9 and 10-, are views of a modification in which a bent steel wire is used with the ring for retaining the rollers on the inner raceway;

Figs. 11 and 12, are views of a similar wire for retaining the rollers on the outer race! way;

Fig. 13, is a view of the development of the one piece steel wire shown inFigs. 9 and 10;

Fig. 14, is a development of the bent wire ring with solid rings at each side welded thereto; and

' shown,

Fig. 15, is a view illustrating a modification of the roller.

Referring'in the firstinstance to Figs. 1 to 4, inclusive, 1 is an inner raceway adapted to an axle, or other support, and this raceway has a conical bearing surface 2 for the rollers 3. The raceway 1 has flanges 4 and 5 at each end thereof. A narrow groove separates the raceway from the flanges. This construction limits the longitudinal movement of the rollers.

6 is the outer raceway which may be mounted in the hub of a wheel, or other device, when the outer raceway rotates on a fixed bearing, or when the inner raceway rotates the outer raceway may be held in any suitable hearing. The raceway 6 has a conical bearing surface 7 It will be noted that the rollers 3 are conical so as to coincide wit-h the two conical bearings surfaces 2and 7. It is very diflir cult to assemble the loose rollers 1n the space between the raceways and when it is desired to remove the rollers they are liable to fall out of position the. moment the raceways are separated; I overcome this difficulty as follows, a groove, 8 is formed in each roller, preferably at the center, and of a width to receive freely a solid ring 9 and is preferably conical, as shownin' Fig. 3, to correspond to the surface of the base of the groove 8 of the rollers 3, but the base of the groove in the rollers may be made conical as shown in F ig. 15, and a ring 9, made as may hold the rollers in place.

In assembling the rollers on the inner race.- way, the ring is placed in position around the raceway and the rollers, one after another,-

are placed in position between the ring and' I the raceway with the rings seated in their grooves so as to maintain them in position on the raceway without interference with their accommodating themselves to the bearing surfaces. When the last roller is placed in position on the raceway a little force is required to push it past the ring so as to allow it to assume the positionillustrated in Fig. 1. after which the assembled rollers are free to rotate on the raceway without the ring interfering with their movement. The ring prevents the internal displacement of the rollers so that the outer raceway can be. located in position, as illustrated in Fig.

1, pr removed, as desired, without the liaof the rollers becoming disarrangecl. When it is desired to hold the rollers in {position on the outer raceway, I arrange the ring 9 as shown in Figs. 5 and 6, so that the rollers are between the ring and the, outer raceway 6, and the assembling of the rollers is accomplished in the same manner as in the construction illustrated in Fig. 1, viz., the ring is located within the raceway 6 and one roller after another is placed in position,

end of the raceway whence the rollers could otherwise be removed ;i. e., as shown, at the large end of the raceway. It will be seen that the raceway, the rollers, and the retaina other parts of the. bearings without falling apart. The rollers are placed one after ing rings constitute a unitary assembly which may be separated from the rest of the bearing without falling apart.

In Figs.' 7 and 8, I have illustrated an-,

other modification in which two solid retaining rings .9" and 9 of generally truneated cone forms are used, the rings being bent so that one ring passes under alternate rollers and over the other rollers, while the other ring passes over alternate rollers and under the other rollers, as in Fig. 8.

he wavy rings occupy the space formed by the grooves 8 in the rollers 3 and are so interlaced with the rollers and engaged in their grooves as to retain them properly assembled for mounting on the raceways. Thus the assembled rollers with the two retaining rings 9", 9 form a unitary assembly which can be separated from the another in the space formed by the two rings and the last roller is forced into position and when the several rollers are in position, the two rings retain them in cylindrical form so that they can be moved as a unit from either of the raceways, or can be readily located in position between the raceways. I

In Figs. 9 and10, I have shown another modification in' which the rollers are not grooved. and the rollers have a fullbearing on the two raceways. In this instance, I use a wire 9, which is -bent as shown in Fig. 13, so as to form transverse bars 11 win nected together by end bars 12 alternately arranged, so. that when the rollers are assembled the bars 11 are located between the several rollers and slightly beyond the center a; through the rollers. This construction holds the rollers in position on. theain ner raceway 1 when the outer raceway 6' ,is removed.

In Figs. 11 and 12, I have shown the same construction of retannng rlng, only the ring is somewhat smaller and the bars 11 fit between the; rollers within the center have shown two rings 13, one at each side, connected to the bars 12 by welding so as to make the construction more rigid;

The main feature of the invention is to provide a ring for holding the rollers onto either one of the raceways when the two raceways are. separated. I

Another important feature of the invention is; the.location of the ring in grooves formed in the rollers, the grooves being at any point throughoulli the length of the roller, so arranged that the grooves of the several rollers will be in alinement.

1. A roller bearing assembly comprising at each end of bars 12, while in Fig.14 I

a conical raceway; a series'of conical rollers arranged substantially close together on said raceway and .annularly 'grooved between their ends; thin, narrowannular retaimng means adapted to seat in the grooves of the; rollers and maintain them in position on the raceway without interference with their accommodating themselves to the bearing surfaces; and a split retaining ring for keeping the assembled rollers in place removably seated in a groove in the end of said raceway whence therollers could otherwise be removed.

2. Aroller bearing comprising an inner member havlng an external, conical raceway, an outer member having an internal, com- .cal raceway, afull series of unspaced, conical rollers interposed between and rolling upon said raceways,-each of said rollers having a medial, circumferential groove, and ,a ringpos'itioned in said grooves, between said rollers and one. of said raceways for retaining the series of rollers assembled with respect to the other of said raceways, said ring being of such diameter as to take a slightly eccentric position with respect to said raceways and ositioned out of bearing contact with said rollers and raceways throughout the greater part of its circumference and except at its point of support.

' In testimony whereof, I have hereunto set my hand on this 23rd day of November, 1921.

CLARENCE E. ROBSON. 

